The problem with corrupted files does not depend on the size, as you can get the right amount of bites, but some of them could be not right. The only way I know to see whether a file is right, apart from the size, is with a Check Sum.
If the files would have been zipped, WinZip shows a CRC for each file. As they are .bin files, there is no way to know whether they are corrupted or not.
I still have some difficulties with the in game play (the installation run OK) and I don't know whether the files are corrupted, is a bug in the mod or I have to install SHIII again. The file sizes I downloaded correspond to the ones in the first page, but to shoot torpedoes with Ctrl+Enter I had to modify an entry in a .cfg file: the command_de.cfg IIRC, the command_en.cfg (english version) one was correct.
I could also find the place where the Degreees and distance layouts are saved. When I replaced them with the original mark for the sub, it appears on the rigth place, but the layout appears displaced.... (see my previous posts).
Help? Help? 